Product Information Bike Type mountian bike Age Range Description fits height 4'9"-5'4" (150-165cm) Frame Material Type Carbon Steel Handlebar Type Flat Handlebar Bike Shift Levers Shifter Lever with Gear Indicator Suspension Type Front Brake Style Disc Speeds 21 speeds Rim Material aluminum alloy Included Components toolkits，Assembly Instructions，reflector Wheel Size 24*2.125 Frame dimensions (seat tube clamp to wheel center axis length) 15 inch load-bearing 250lb Tire Type Clincher【High Carbon Steel Frame for Durability and Strength】Built with a high carbon steel frame, this mountain bike offers a strong and durable structure, perfect for handling rough terrains and daily rides.【Reliable Disc Brakes for Safe Stopping Power】Equipped with reliable disc brakes, this bike ensures consistent and powerful stopping performance, making it a safe choice for teenagers riding in varied conditions.【Stylish Design with Brown Edge Tires】Featuring a unique design with brown edge tires, this bike stands out with its modern and stylish look, while also providing excellent traction for various outdoor activities.【Perfect for Teenagers - Great for School and Outdoor Fun】This 24-inch mountain bike is specifically designed for teenagers, making it an ideal choice for school commuting, casual rides, and outdoor adventures.【Built to Last - Ideal for Daily Use】With its sturdy construction and eye-catching design, this bike is built to withstand the wear and tear of everyday use, ensuring long-lasting performance and enjoyment.